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136822 (1997 PW4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2136822
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358989459787305 4.91e-08  
a 3.983826699891544 5.1035e-08 au
q 3.442428850414359 2.0842e-07 au
i 3.317752662129585 5.7411e-06 deg
node 155.4212254739475 9.6702e-05 deg
peri 174.2512006902799 9.9254e-05 deg
M 313.1060536571948 2.5201e-05 deg
tp 2459378.823540395378
(2021-Jun-13.32354040)
0.00020732 TDB
period 2904.350884583469
7.95
5.5809e-05
1.528e-07
d
yr
n .1239519652776492 2.3818e-09 deg/d
Q 4.52522454936873 5.797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      7961 days (21.80 yr)  
   first obs. used      1997-08-10  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:49:41  

Additional Information
 Earth MOID = 2.43148 au 
 Jupiter MOID = .847592 au 
 T_jup = 3.037 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456787.5 (2014-May-10.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372423030948156 4.9672e-08  
q 3.42144570862328 2.0643e-07 au
tp 2456510.616947312008
(2013-Aug-06.11694731)
0.00017444 TDB
node 155.6083952493848 9.6815e-05 deg
peri 176.4196614402221 9.9267e-05 deg
i 3.31938878348173 5.7517e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      377  
   data-arc span      7961 days (21.80 yr)  
   first obs. used      1997-08-10  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:49:41  

Additional Information
 Jupiter MOID = .847592 au 
 T_jup = 3.037 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.467297357040647E-15 -9.993617280333279E-15 2.9512933564345E-12 -1.7826985040681E-15 3.495190568163081E-13 -2.664735409263529E-16
q -9.993617280333279E-15 4.261335800422206E-14 -9.078407931297263E-12 6.372677741268267E-15 -1.032319248687346E-12 1.840139848133625E-15
tp 2.9512933564345E-12 -9.078407931297263E-12 3.042912496745181E-8 -1.713930451089767E-11 3.893009757618648E-9 -1.012957636161437E-12
node -1.7826985040681E-15 6.372677741268267E-15 -1.713930451089767E-11 9.373194632737113E-9 -9.359496538884324E-9 2.072539338218077E-10
peri 3.495190568163081E-13 -1.032319248687346E-12 3.893009757618648E-9 -9.359496538884324E-9 9.85395414679982E-9 -2.070307470067537E-10
i -2.664735409263529E-16 1.840139848133625E-15 -1.012957636161437E-12 2.072539338218077E-10 -2.070307470067537E-10 3.308244596167189E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO436674  

136822 (1997 PW4)          Discovered 1997-Aug-10 by Galad, A., Pravda, A. at Modra
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1997 PW4 = 2005 QK94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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